Cognomen Тарнава (Тарнава 
, Tarnava 
) , in the world, is a rare family name. The family name Тарнава is habitual in Greece, where it is a rare surname, Georgia, where it is a very rare surname, and Canada. In absolute terms, it is the most numerous in Russia, Canada, and Greece.
| VARIANT | COUNTRY |
|---|---|
| Тарнава | Russia, Ukraine |
| Tarnava | Russia, Canada, United States, Argentina, Greece |